Jeff Zemerick
Pittsburgh, Pennsylvania, United States
Summary
🤩
RockstarJeff Zemerick is a seasoned software engineer based in Pittsburgh with 10 years of experience specializing in cloud, NLP, and search systems. He blends hands-on engineering with open-source contributions—most notably adding ONNX model support, a wordpiece tokenizer, and enhanced name-finding/sentence detection to the widely used Apache OpenNLP project. Comfortable across the stack, Jeff focuses on productionizing NLP models and integrating modern ML formats into established Java tooling. He maintains a developer-facing portfolio at jeffzemerick.dev and brings a practical, test-driven approach to evolving search and language pipelines.
11 years of coding experience
Stackoverflow
3,375reputation
377kreached
142answers
5questions
amazon-web-services
top-1%
amazon-s3
top-5%
amazon-ec2
top-5%
Github Skills (22)
machine-learning10
onnx10
aiml10
amazon-web-services10
java10
ml10
javas10
ai10
natural-language-processing10
nlp10
testing9
amazon-s39
amazon-ec29
amazon-dynamodb6
asp-net6
Programming languages (17)
Github contributions (5)
apache/opennlp
Jul 2017 - Dec 2022
Apache OpenNLP
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:181 reviews, 63 commits, 179 PRs in 5 years 6 months
Contributions summary:Jeff primarily contributed to the implementation of ONNX model support for document categorization and name finding. Their work involved the integration of a wordpiece tokenizer, the creation of test cases, and refactoring code. They also updated the documentation, addressed checkstyle issues, and implemented sentence detection within the namefinder.
opennlpapachecomplingnlptextprocessing
jzonthemtn/jzonthemtn
Aug 2021 - Jun 2026
Contributions:17 pushes, 1 branch in 4 years 10 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.